D2 has a Lunoo score of 7.9/10. This score is based on an AI-powered analysis of features, user reviews, expert opinions, and overall quality.

How does D2 compare to competitors?

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D2

7.9

Good

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description D2 Overview

D2 (Declarative Diagramming) is a modern, code-based diagramming tool that aims to be more powerful and flexible than Mermaid.js. It uses a declarative syntax to define diagrams, which are then rendered into high-quality visuals. D2 is designed to be highly extensible, with support for custom themes, layouts, and complex shapes. It is gaining popularity among developers who want a more modern, robust alternative to older code-based tools.

With its focus on clean syntax and beautiful output, D2 is an excellent choice for developers who want to create professional diagrams as part of their documentation-as-code workflow.

help D2 FAQ

What is D2?

D2 (Declarative Diagramming) is a modern, code-based diagramming tool that aims to be more powerful and flexible than Mermaid.js. It uses a declarative syntax to define diagrams, which are then rendered into high-quality visuals. D2 is designed to be highly extensible, with support for custom themes, layouts, and complex shapes. It is gaining popularity among developers who want a more modern, robust alternative to older code-based tools. With its focus on clean syntax and beautiful output, D2 is an excellent choice for developers who want to create professional diagrams as part of their documentation-as-code workflow.

How good is D2?

D2 scores 7.9/10 (Good) on Lunoo, making it a well-rated option in the Graphic Design Software category.

What are the best alternatives to D2?

See our alternatives page for D2 for a ranked list with scores. Top alternatives include: PlantUML, Graphviz, Apple.

How does D2 compare to PlantUML?

See our detailed comparison of D2 vs PlantUML with scores, features, and an AI-powered verdict.

Is D2 worth it in 2026?

With a score of 7.9/10, D2 is a solid option in Graphic Design Software. See all Graphic Design Software ranked.

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